沸石分子筛的生成机理与晶体生长(ⅩⅢ)——M-Si-ZSM-5型沸石自发成核晶化动力学模型

The Mechanism of Formation and Crystal Growth of Molecular Sieve Zeolite(ⅩⅢ)——The Crystallization Kinetic Model for a Spontaneous Nucleation System of the M-Si-ZSM-5-type Zeolites

在Na_(2)O-HMDA-M_(2)O_(3)-SiO_(2)-H_(2)O体系及150℃下通过对系列M-Si-ZSM-5型沸石合成及其晶化规律的研究(M=B,Al,Ga,Ti,V,Cr或Fe),提出了此类沸石的自发成核晶化动力学模型,各种M-Si-ZSM-5型沸石的理论晶化动力学曲线与实验点吻合较好。

A crystallization kinetic model for a spontaneous nucleation system of the M-Si-ZSM-5-type zeolites(M=B,Al,Ga,Ti,V,Cr or Fe)has been suggested on the basis of the investigation of the hydrothermal synthesis for this type of zeolites in tic.system of Na_(2)O-HMDA-M_(2)O_(3)-SiO_(2)-H_(2)O at 150℃.The crystallization kinetic curves for the various M-Si-ZSM-5-type zeolites,obtained by calculation of the model,agree well with the experimental values.